You’ve probably heard her voice. Even if you don’t have an iPhone, you have likely heard a friend, a coworker, or someone at a coffee shop ask a question into their smartphone and wait for a response from a service that was allegedly voiced by this woman…

For the past two years, she’s been a pocket and purse accessory to millions of Americans. She’s starred alongside Samuel L. Jackson and Zooey Deschanel. She’s provided weather forecasts and restaurant tips, been mocked as useless and answered absurd questions about what she’s wearing.

She is Siri, Apple’s voice-activated virtual “assistant” introduced to the masses with the iPhone 4S on October 4, 2011.